https://github.com/gokulnpc/java-project

https://github.com/gokulnpc/java-project

Last synced: 8 months ago
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• Host: GitHub
• URL: https://github.com/gokulnpc/java-project
• Owner: gokulnpc
• Created: 2025-04-12T20:41:03.000Z (9 months ago)
• Default Branch: main
• Last Pushed: 2025-04-27T21:07:00.000Z (8 months ago)
• Last Synced: 2025-05-05T05:03:07.125Z (8 months ago)
• Language: Java
• Size: 564 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
# JavOS – A Simulated Operating System Environment

## Overview

JavOS is a desktop-style application built using JavaFX that simulates the look and feel of a basic operating system environment. It features:

- A login screen for access control

- A multi-window GUI with a taskbar and application launcher

- Multiple simulated "applications" (Terminal, Notepad, Calculator, Weather, Calendar) that run as independent threads

- A terminal emulator capable of interpreting mock shell commands and displaying system-like outputs

## Key Features

### 1. GUI Desktop Environment (JavaFX)

- Main desktop window with wallpaper, taskbar, and application launcher

- Each app launches in its own movable and closable sub-window

- Clean, modern styling with CSS to mimic real OS aesthetics

### 2. Multithreaded App Management

- Each application (terminal, notepad, calculator, etc.) runs in a separate thread

- All apps are managed by a global ProcessManager, which assigns process IDs (PIDs) and allows for process management (ps/kill)

### 3. Terminal Emulator

- Simulated command-line interface styled with JavaFX

- Supports shell-like commands:

  - `ls` – Lists available apps

  - `ps` – Displays running threads (apps) and their status

  - `time` – Shows current system time

  - `kill ` – Simulates terminating an app (thread)

- Outputs are printed in styled console format (monospace font, color-coded feedback)

- Commands are parsed and executed within their own thread for responsiveness

### 4. Scientific Calculator

- Apple-style, scientific calculator with trigonometric, logarithmic, power, factorial, and other functions

### 5. Testing and Demonstration

- Users log in, open apps via the launcher, run terminal commands, and view thread info in the system monitor

- Demonstrates multitasking by launching multiple apps simultaneously

- Manual testing of command responses and app lifecycle handling

### 6. Real File System Integration

- **Notepad** and **File Explorer** interact with the real file system:

  - Files are saved and opened from the `~/JavOSFiles` directory in the user's home folder.

  - Notepad auto-saves the current file every 30 seconds if there are unsaved changes.

  - Notepad maintains a list of recent files for quick access.

  - File Explorer displays all files in the `~/JavOSFiles` directory and allows users to open or delete files.

## Setup & Usage

**Default Login Credentials:**

- Username: `admin`

- Password: `password`

1. **Clone the repository:**

   ```sh

   git clone 

   cd Java-Project

   ```

2. **Build the project:**

   - Use your preferred Java IDE (IntelliJ, Eclipse, etc.) or build with Maven:

     ```sh

     mvn clean install

     ```

3. **Run the application:**

   - From your IDE, run the `JavOS` main class

   - Or from the command line:

     ```sh

     mvn javafx:run

     ```

## Demo Script / How to Demonstrate

1. **Login:**

   - Start the app and log in with your credentials

2. **Open Multiple Apps:**

   - Use the launcher to open Terminal, Notepad, Calculator, Weather, and Calendar

3. **Terminal Commands:**

   - In the Terminal, run `ls`, `ps`, `time`, and `kill `

   - Observe process management and app lifecycle

4. **Multitasking:**

   - Open and use multiple apps at once

   - Kill and restart apps using the terminal

5. **Scientific Calculator:**

   - Use advanced functions (sin, cos, log, power, factorial, etc.)

6. **Manual Testing:**

   - Try edge cases (e.g., kill the same PID twice, open/close many apps)

7. **File Management:**

   - Open Notepad and File Explorer.

   - Create, edit, and save files in Notepad. All files are saved in the `~/JavOSFiles` directory.

   - Use File Explorer to view, open, and delete files in the `~/JavOSFiles` directory.

## Authors

- Adithyah Nair (an4465)

- Gokuleshwaran Narayanan (gn2244)

## Notes

- For best results, use the latest version of Java and JavaFX.

- If you encounter any issues, please check the code comments or contact the authors.